NTSB Identification: FTW88LA075.
The docket is stored on NTSB microfiche number 37400.
Accident occurred Wednesday, January 20, 1988 in GRAND PRAIRIE, TX
Probable Cause Approval Date: 09/11/1989
Aircraft: AEROSPATIALE AS-355-F1, registration: N5800F
Injuries: 2 Minor.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE ACDT OCCURRED ON THE 2ND FLT OF TRANSITION TRNG FOR AN EXPERIENCED HELICOPTER PLT. THE TRNG ON THIS FLT INCLUDED SIM TAIL ROTOR FAILURE RUN-ON LANDINGS. THE CFI DEMONSTRATED 2 LANDINGS AND THE TRAINEE TOOK THE CONTROLS FOR THE 3RD. THE LANDINGS WERE BEING MADE IN THE GRASS BESIDE A PAVED RWY. DURING THE LANDING SLIDE THE FRONT OF THE SKIDS DUG IN AND THE HELICOPTER PITCHED FORWARD. THE TRAINEE PULLED UP ON THE COLLECTIVE AND AFT ON THE CYCLIC WHEREUPON THE HELICOPTER ROCKED BACKWARDS AND THE TAIL STRUCK THE GROUND. THE HELICOPTER BECAME AIRBORNE; HOWEVER, THE CFI DETECTED VIBRATION AND UNUSUAL NOISE AND ANNOUNCED 'TAIL ROTOR FAILURE'. AN EMERGENCY LANDING WAS COMPLETED WITH NO ADDITIONAL DAMAGE OR INJURIES.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

UNSUITABLE TERRAIN OR TAKEOFF/LANDING/TAXI AREA..SELECTED..PILOT IN COMMAND(CFI)

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ROTORCRAFT FLIGHT CONTROLS..IMPROPER USE OF..DUAL STUDENT

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

SUPERVISION..INADEQUATE..PILOT IN COMMAND(CFI)



Contributing Factors

TERRAIN CONDITION..SOFT


Contributing Factors

LACK OF TOTAL EXPERIENCE IN KIND OF AIRCRAFT..DUAL STUDENT

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